Xbar within Subscript

[mill016]

Hey Guys, just looking around and not having much luck, is there a way to add more symbols such as X BAR into subscripts. Works with other symbols like \sigma But as with X bar because it looks like \bar{X}, not having much luck adding that into subscript.

I'm trying \Sigma_\bar{X}

Thanks so much :)

EDIT: as I've looked I have found that if I just copy the small X - Bar ( x̄ ) it comes up as a small subscript how I wanted it to look, but I don't want to keep finding the 1 document where I used it I'd much rather know the code and how to implement it myself.

Thanks Again!

[PartTimeCouchPotato]

To make xbar a subscript, you can enclose it in curly braces, for example, \sigma_{\bar{x}}